Home / 861,079.67-1,291,776.23-355,542.47

Finding the Fourth Proportional to 861,079.67, 1,291,776.23 and 355,542.47

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Solution

The fourth proportional to 861,079.67, 1,291,776.23 and 355,542.47 is: 533,378.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,079.67 : 1,291,776.23 = 355,542.47 : x
  2. Step 2: Convert to fraction form
    861,079.67/1,291,776.23 = 355,542.47/x
  3. Step 3: Cross multiply
    861,079.67x = 1,291,776.23 × 355,542.47
  4. Step 4: Simplify right side
    861,079.67x = 459,281,305,042.61
  5. Step 5: Solve for x
    x = 459,281,305,042.61/861,079.67
  6. Step 6: Final answer
    x = 533,378.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.